1. The effect of land usage on aquatic and semi-aquatic vegetation at high altitudes in Southern Africa

   • A. Jacot Guillarmod

   OriginalPaper Pages: 3 - 13

2. Hydrologic aspects of limnology in South Africa

   • H. I. Schwartz

   OriginalPaper Pages: 14 - 28

3. Some effects of siltation upon aquatic macrophyte vegetation in rivers

   • D. Edwards

   OriginalPaper Pages: 29 - 38

4. The effects of land use on freshwater fish in South Africa, with particular reference to Natal

   • R. S. Crass

   OriginalPaper Pages: 38 - 38

5. The effects of silt and sand on the invertebrate fauna of streams and rivers

   • F. M. Chutter

   OriginalPaper Pages: 57 - 76

6. Effect of algal extracts of Phormidium species on growth and development of rice seedlings

   • A. B. Gupta
   • A. C. Shukla

   OriginalPaper Pages: 77 - 84

7. Size relationships of Acroneuria californica (perlidae, plecoptera) and its prey

   • Andrew L. Sheldon

   OriginalPaper Pages: 85 - 94

8. Nutrient changes in water flooding the high salt marsh

   • John J. Blum

   OriginalPaper Pages: 95 - 99

9. Contribution à la connaissance de la faune marine de la côte belge

   • Eliane Brackie
   • Philip Polk

   OriginalPaper Pages: 100 - 125

10. Effect of temperature and salinity on the heat tolerance in the hermit crab, diogenes bicristimanus

    • R. Nagabhushanam
    • R. Sarojini

    OriginalPaper Pages: 126 - 134

11. Oxygen balance in micro stabilization ponds

    • A. H. Nasr
    • Sobhi K. Moawad

    OriginalPaper Pages: 135 - 144

12. Bibliography

    Legacy Pages: 144 - 144